Note: silver and Azale both failed to submit orders, so I had a little fun with Brazil.
Globally, the main issue is the continuing collapse of the economy. Trade has virtually disappeared worldwide, with the few remaining neutrals unable to take up the slack and the submarine campaigns of the various Powers disrupting what does occur. Labor unrest is increasing in not only the Entente Powers, especially Britain and Spain, but also in the Allies, as Hungary is forced to put down a major uprising in Budapest itself, the United States drowns a Western Pennsylvania coal miner strike in blood, and Germany responds with army units to unrest in Prague and Posen. It is clear that most of the Powers involved in the Global War will need to come to some kind of agreement before they are claimed by utter exhaustion.
Canada is a real mess. A Quebecois rebel movement started out with fairly little initial support outside of a few small rebel bands in February. After the Americans pretty much wiped out the central Canadian government with a massive encirclement and overwhelming forces, though, the Quebeckers managed to get some semblance of support for a republican government, and they have managed to extend control to most of Quebec with American government support. In the Prairie Provinces, though, the American troops ran into a major stumbling block as the remnants of the Canadian army began to collect there later in the year, preventing the pacification of the country (not to mention the ongoing partisan warfare in Ontario and BC).
Mexico continues to defy political solution by the Americans, whose Congress is beginning to actually butt heads with President Coolidge over the restive "Commonwealth". Federal organization has been deferred until the next year by Democratic stonewalling and by the militant uprisings of several anti-American groups, especially a really major one in Baja. Zapata has set up his own miniature warlord government in the south, covering much of former Guatemala as well as Oaxaca.
Peru, surprisingly enough, invades the defunct Ecuadoran republic and scores a few major victories over the weak enemy army outside Guayaquil and Cuenca. After the first border clashes, Ecuador disintegrates, and the Peruvians march all the way up to Quito itself, where military government is imposed. No territorial solution has been decided upon yet, and it may be that the country will be annexed outright by the Peruvians.
Argentina and Brazil finally got their act together and ended their Quasi War. Getulio Vargas' army drove deep into the Banda Oriental, brushing aside the weak Uruguayan military with a series of quick armored strokes that brought the Brazilians to Montevideo in weeks. However, inside the city itself, the Uruguayans put up much resistance, supported by Argentine artillery and elements of their navy. While the Brazilian southern thrust bogged down, their secondary attack was further developed: a strike across the Parana managed to secure a beachhead, and now it received armored reinforcements, driving deep into Argentine territory towards the rear areas of the First and Second Armies, who were engaged to their fronts by the puppet Paraguayans. The Argentine military, though, managed to redeploy elements of the First Army in a gigantic pakfront that halted the Brazilians cold at Resistencia. A subsequent counterblow by the Argentinians, using a large portion of the Fourth Army reserve force (which also formed the backbone of the troops holding Montevideo) managed to recross the Parana and drive towards the prewar border, and by the end of the year the Brazilians in the Banda Oriental were coming dangerously close to being cut off by Argentinian armored thrusts. At sea, part of the French navy assisted the Brazilians and repelled a Brazilian-American naval attack on the Plate River, an attempt to tear the supply lines to beleaguered Montevideo to shreds. After the battle of the River Plate, the Americans and Brazilians concentrated on establishing a blockade around Argentina, which kept most commerce from coming through and which was beginning to have a deleterious effect on the Argentine economy.
The North Sea nearly didn't see combat this year, but the Allies launched a massive attack on the German fleet. Spain and France both devoted naval forces towards a fleet that boiled out of the English Channel in June, combined with a sally by the Royal Navy from its Scapa Flow fastness. The Germans managed to defeat the British fleet in a hard-fought battle off the Dogger Bank, concentrating the High Seas Fleet first against the British and then against the southern force of Spanish and French. The second time, though, the battered German navy was unable to smash the enemy fleet, which slugged it out in close range, eliminating the Germans' superiority in the air, which mainly served as reconnaissance. This battle, off Calais, ended indecisively, with both sides seriously battered and unable to mount further operations. The Allied blockade remained around the Continent, and the Germans continued to mount periodic raids on the British coast to the annoyance of both sides.
In France itself, the war was clearly beginning to bog down. A series of French attacks in the early part of the year pushed the Germans back slightly, but the use of Belgian troops in the German army helped the Germans repel the enemy and launch limited counterattacks, though not much ground was regained. German efforts at a counterblow were halted by the sheer numbers of French conscripts, which scraped the bottom of the barrel but which managed to give the Entente enough men to hold Paris and even chip away at the southern German flank some. German air superiority is still unchallenged as of the end of the year, though, and the French, even with British aid, are rapidly nearing domestic collapse.
Spain put down several parts of the Portuguese revolt, aided by the institution of a constitution in Spain itself and the restoration of Portugal as a republic. This sort of damaged the US attempt later in the year to storm Gibraltar. The Spanish navy was mostly occupied to the north, so the American fleet had superiority, and the ground troops did as well. However, without the distraction of the Portuguese and now with a significant amount of national support, the Spanish were able to successfully counter enemy attacks on Cadiz and in northern Andalusia, and the American attack on Tangier was also repulsed. Later in the year, though, the Spanish concentration on the Americans and on the outer theaters allowed a major Catalan/Marxist revolt, which has remained unpacified as of December.
George Patton's expeditionary force was almost completely destroyed by a French army under Philippe de Hautecloque, which then moved to support the Spanish elsewhere on the continent. German holdings in Namibia were the target of this year's offensive; the vastly outnumbered Germans were driven back toward the Auas Mountains after Walvis Bay and Windhoek were seized by Franco-Spanish troops with renewed vigor. East Africa remained untouched thus far, however...outside of the Dutch attack on Mocambique, which was largely facilitated by a good rapport with the colonial government of the Companhia, which was bribed very efficiently and which generally cooperated in the Dutch seizure of the colony, which saw some native African resistance that didn't actually amount to much by the end of the year.
In Italy, Mussolini's fascists were finally forced completely underground after the seizure of Milan; still, the Reds are proving a serious thorn in the Neapolitans' side, with the assassination of Marshal Graziani in November and a nearly successful attempt on the King's life a week later. Significant casualties are being suffered by the Neapolitan troops in the north, which are fighting a desperate partisan war against an enemy that seemingly cannot be killed.
The Balkan conflict ground on; despite the Marxist distraction, the Hungarians and the Imperials managed to smash the perfidious Serbians once and for all and made significant ground against the Bulgarians, who were driven back through Wallachia and who suffered significant losses in the Haemus Mountains against a determined Imperial offensive. The withdrawal of most of the British troops from the Aegean Sea region allowed the battered Imperials to finally reclaim all of their territory, but an official state of war still exists, and the country itself is nearly completely ruined. The Turks are already beginning to grumble, and the sheer difficulties of integrating Greeks and Turks, even assisted by a common enemy, are beginning to make themselves apparent.
Russia is still going to Hell in a handbasket. Thankfully for the Blues, the Germans did not attack; the first part of the year, spent mostly in solidifying a stable front against the Monarchists, was pretty bloody for both sides but eventually the monarchists managed to establish a perimeter in an arc from Lake Peipus to just west of Arkhangelsk, repulsing the half-hearted attacks Khabalov was mounting, which were mainly to keep the enemy on their toes during the spring rasputitsa. Indeed, Khabalov was busier in the south with a lightning attack to secure the Caucasus; the Georgian independence movement, led by the mysterious "Koba", was co-opted and all resistance was smashed by a flying column. Upon nearing Baku, though, the Russians ran into a surprise opponent: the stumbling, poorly supplied Constitutionalist Persian Army, which although having the advantage of numbers had nearly no ammunition, fuel, or food. Nonetheless, government funds were reallocated and a standoff now persists in Aizerbadjan, a quasi state of war with some skirmishing. Meanwhile, in the Urals, the Pechora River offensive, commanded by Alexei Brusilov himself, was a great operational success against the squabbling monarchist command, securing the high ground near the Ob with inferior numbers but a much better plan. However, the monarchists' greater numbers (in the Urals anyway) made themselves known when the Blues attempted to march on Yekaterinburg, which formed a critical defensive bastion from which they were able to repulse a few Blue probes earlier in the year. Brusilov wisely decided to bypass Yekaterinburg and encircled the city fully by September, after which most operations halted as the siege began. By the end of the year, it was still going on, but the monarchists were clearly near the end of their rope and their numerical advantage was seriously eroding.
The Arabs launched several attacks on British Mesopotamia; with some popular support, they did secure some cities, viz. Nasiriyah and Najaf, but then had to contend with British reinforcements. The numerically superior British troops launched a wildly successful counterattack and smashed what revolts were extant, and even managed to recapture Basra, forcing the Arabs back into the desert. Another attack on the Suez was similarly repulsed, although the British suffered more casualties there. The Trucial States, though, were completely unguarded, and the Arabs managed to overrun them with scanty resistance. Meanwhile, with virtually no British resistance, the Germans continued to expand their Aden beachhead into the Hadramaut and the Yemeni wilderness.
India continued to come close to boiling over, although with some adroit British colonial policies the whole country was prevented from a general revolt. Gandhi's satyagraha has expanded into an entire "Quit India" movement, which has gained relatively little support outside the Indians themselves, who are quite supportive of the whole thing indeed.
The Qing Chinese managed to quite efficiently crush all opposition again, although it was much quieter than last year and the Marxists seemed to be biding their time again. A brief expedition north into Russian Manchuria met with virtually no resistance apart from that of the Marxists themselves, who actually constituted the entirety of the Chinese population there. They, though, went back underground as well after the Chinese brought overwhelming force to bear against them.
Australia managed to avoid assault for much of this year while the Americans were busy with pacifying the North Island, but with the utter absence of British troops the Australians were unable to repel the landing when it actually did take place. Although fierce fighting did surround the German-American force when it landed, the Australians were forced to quit Sydney and much of Victoria and New South Wales as the Americans and Germans expanded their beachhead. In a somewhat comical sideshow, a five-minute war was carried out between the "Emperor of Timor" and the Dutch government, which landed enough troops to completely crush the resistance of everybody on the island, even if they had been interested in revolting against their new overlords.