1. In February, 1917, the 20th Division was transferred to Alsace (Sundgau) in anticipation of a French offensive.
2. In the beginning of March it was brought back to the Laon area, where it was billeted until the French attack of April 16; its regiments received some replacements.
Chemin des Dames.
3. In the night of April 16 all the units of the division were assembled. On April 17–18 they took their positions along the plateau of the Chemin des Dames on both sides of Cerny en Laonnois, relieving the 16th Reserve Division, which had suffered heavy losses. Between April 18 and May 5 the three regiments of the 20th Division suffered heavy losses from bombardments. On May 5 (renewal of the general attack by the French) the division again lost heavily. It was relieved immediately after the attack. (Apr. 27 to Aug. 10, the 10th Company of the 77th Infantry Regiment had received not less than 211 men as replacements.)
4. After a few weeks of rest, the division was put into line (end of May) in a sector of Champagne (Moronvilliers).
Russia.
5. In the beginning of July it was relieved and transferred for a third time to the Russian front, first in Galicia and then in Courland. It remained there until September 19. At this date it entrained at Riga and was brought back to France by way of Chavli, Kovno, Grodno, Bromberg, Berlin, Hanover, Cologne, Aix la Chapelle, Mons, Valenciennes.
Flanders.
6. Arriving at Roulers on September 27, it immediately went into action in an attacking sector, north of Zonnebeke, without having any rest, on October 4.