World War II First Combat Helicopter Rescue in Burma April 22, 1944
World War II: The 1st Air Commando Group using Sikorsky R-4 helicopters stage the first use of helicopters in combat with combat search and rescue operations in the China Burma India Theater. Date: April 22, 1944 Read more on Wikipedia β π Other events on April 22 π Events on this day in 1944 π …