Official "basic load" was 105 rounds for the M1903AX or M1917 or 88 rounds for the M1 Garand (loaded belt plus a loaded rifle). The M1923 cartridge belt was used through the Korean war and by the NG and other services using the Garand. In addition 2 grenades and if the squad had a BAR every man was supposed to carry 2 loaded magazines.
When the feet hit the dirt that official plan like all plans was revised as necessary according to situation and supplies.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.