Approximate timeline.
Early July-Start of O Offensive
Mid July-Offensive Stalls-Southern Flank collapses under Portuguese reinforcements
Late July-Southern Flanks is broken, I forces stream back to the border. Northern Flank retreats, harried by Iberians
Early August-Reserves plug the southern front, northern front turn and stall the Iberian chasing attack.
Mid August-To help relieve open the flank, French forces skirmish in the north but did not find any openings.
Late August-Both sides relieved pressure and backed off to wait for reinforcements.
Early September- The largest Iberian raid yet in the Pyrenees repulsed
Mid September- Defenses completed in O, secondary lines started, reinforcements are being collected in Aquitaine
Late September- I artillery attack
Early November- I forces attack, but stalled
Mid November-Iberian forces managed to break through near the Garonne river, but O forces retreat to secondary lines
Late November-fighting calms down once more.