 Complete the following phrase:  From 5 December 1917 to 15 January 1918, Escadrille Spa.88 was detached from the Groupe. After rejoining Groupe de Combat 13, the Groupe was one of those incorporated into Escadre de Combat No. 2 on 26 February. In turn, the Escadre was gathered into the Division Aerienne on 14 May 1918, as part of the French accretion of airpower. The Division Aerienne was tasked to the U.S. 1st Army for the 