"Silk chutes and Hard Fighting: US Marines Corps..." Topic

…. Parachute Units in World War II

"As August progressed it became clear that the Japanese were focusing their effort in the Solomons on regaining the vital airfield on Guadalcanal. The enemy poured fresh troops onto the island via the "Tokyo Express," a shuttle of ships and barges coming down the "the Slot" each night. The 1st Marines destroyed the newly landed Ichiki Detachment along the Tenaru River on 21 August, but the understrength Marine division had too few troops to secure the entire perimeter. To bolster his force, General Vandegrift brought the raiders over from Tulagi at the end of August and switched the parachutists a few days later. The two battalions went into reserve in a coconut grove near Lunga Point. During this period Major Miller took ill and went into the field hospital, as did other parachutists. The shrinking battalion, temporarily commanded by a captain and down to less than 300 effectives, was so depleted in numbers and senior leadership that Vandegrift decided to attach them to Edson's 1st Raider Battalion. The combined unit roughly equalled the size of a standard infantry battalion, though it still lacked the heavy firepower…"
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Amicalement
Armand

Yes, many don't know of the 2 USMC Raider Bns and 2 Parachute Bns in WWII.

I have been corrected, the USMC eventually had 3 Paramarine Bns.