 In the two-day battle, the Japanese Navy lost nearly 92 percent of its carrier-based aircraft (395 planes) as opposed to 130 planes lost by TF 58, the fast carrier task force under Vice Admiral Marc A. Mitscher.Meanwhile, the unexpectedly stiff resistance on Saipan and the sortie of the Japanese Fleet had necessitated a delay in the landings on Guam.Finally, as part of Task Group (TG) 53.3, "Windsor" took part in the assault landings on Guam, landing troops of the 2d Battalion, 3d Marine Regiment, 3d Marine Division, on D-Day, 21 July, following close on the heels of intensive naval gunfire and carrier-based aircraft attacks.