I have some terrain maps I can use, as far as roads go though, not really sure if I have available the prominent roads of this era, although I could probably find something somewhere to go off of.
Map looks great BTW!
Here's some OOB details I could find so far in reference to sizes of force only at beginning of First Balkan War:
Greek Forces
Greece could provide 200,000 men in the field total.
The Army of Thessaly fielded 7 infantry divisions, a cavalry brigade and 4 independent Evzones battalions, equaling roughly 100,000 men.
Further 10,000 to 13,000 men in eight battalions were assigned to the Army of Epirus which was intended to advance into Epirus.
Navy
4 Battleships
3 Cruisers (one was the Averof cruiser)
19 smaller vessels (destroyers, torpedo boats, and others?)
Serbia Forces
230,000 men with about 230 guns, grouped in 10 infantry divisions, two independent brigades and a cavalry division.
Montenegro Forces
35,600 men with 126 guns, organized in four divisions, each of three brigades.
Bulgaria Forces
The peacetime army of 60,000 men was expanded during the war to 370,000, with almost 600,000 men mobilized in total, out of a population of 4,300,000.
The Bulgarian field army counted for 9 infantry divisions, 1 cavalry division and 1116 artillery units.
Navy
The Bulgarians also possessed a small navy of six torpedo boats, which were restricted to operations along the country's Black Sea coast.
Ottoman Empire Forces
The regular army (Nizam) was well-equipped and trained, but the reserve units (Redif) that reinforced the regular army included many non-Muslim and non-Turkish locals, especially those based outside Anatolia.
The Ottomans had two armies in Europe, the First Army in Thrace, and the Second Army in the Balkans.
The First Army was composed of the four corps of which were made up of Nizamiye soldiers.
- The I Corps included the 1st, 2nd, and 3rd Divisions and two cavalry brigades.
- The II Corps was made up of the 4th, 5th, and 6th divisions.
- The III Corps was their premier corps, and was made up of the 7th, 8th, and 9th divisions and a cavalry brigade.
- The IV Corps was composed of the 10th, 11th, and 12th divisions and a cavalry brigade.
--- Each corps also included artillery and support troops.
--- The Army could expect to be reinforced by up to 14 Redif divisions, some from Thrace and others from Anatolia. Redif divisions were not numbered, but named after the city from which they were based.
The Second Army in the Balkans was composed of three corps.
- The V Corps, with the 13th, 14th, and 15th divisions and a cavalry brigade.
- The VI Corps made up of the 16th, 17th, and 18th divisions and a cavalry brigade
- The VII Corps made up of the 19th, 20th, and 21st divisions as well as a cavalry brigade.
- There were also three independent divisions, the 22nd, 23rd, and 24th.
--- Lastly, to reinforce the army there were 12 Redif divisions which mobilized from local personnel in the Balkans.
--- In time of war the Ottomans planned to bring more troops in from Syria, both Nizamiye and Redif. Greek control of the Aegean prevented those reinforcements from arriving. Instead those soldiers had to deploy via a land route, and most never made it to the Balkans after the rail line was cut early in the war.