May 1—French Senegalese troops occupy Yeni Shehr on the Asiatic side of the Dardanelles.
May 2—French troops lose ground on the Asiatic side of the Dardanelles; Allies make further advances on the Gallipoli Peninsula; Allies now hold Gaba Tepe; the Australian contingent has lost heavily.
May 4—Allies repulse Turks and are on the active offensive on Gallipoli; Turks win success near Avi Burnu.
May 5—Turks check attempt of Allies to advance at Sedd-el-Bahr; Turks check Allies near Avi Burnu.
May 6—Russians have defeated a Turkish army corps in the Caucasus, routing it and taking many prisoners; desperate fighting is in progress on the Gallipoli Peninsula, the advance of the Allies being met by stubborn resistance; Allies have captured the heights facing Souain Dere Fort, four miles west of Kilid Bahr.
May 7—Severe fighting at Avi Burnu and at Sedd-el-Bahr, at the latter place the Turks capturing ten British machine guns.
May 10—Russians drive Turks from their positions in the direction of Olti; Russians drive Turks from the South Pass near Tabriz and occupy villages; 8,000 Turkish wounded have arrived at Constantinople from the Dardanelles.
May 13—The Gallipoli coast line is now in Allies' possession.
May 15—Turks repulse Allies near Avi Burnu.
May 16—Allies make progress in hills behind Kilid Bahr and Maidos; Turks have been attacking for three days British positions on the Gallipoli Peninsula, but have been repulsed with heavy loss.