First recorded by The Original Caste (CAN #6 1969 |US #34 1970).
Other hit versions by Coven (US #17 1971 |US #79 1973), Skeeter Davis (C&W #54/CAN #4 1972).
From the wiki: “‘One Tin Soldier’ is a 1960s counterculture era anti-war song written by Dennis Lambert and Brian Potter. Canadian pop group The Original Caste first recorded the song in 1969. The track went to #6 on the (Canadian) RPM Magazine charts, hit the #1 position on CHUM-AM in Toronto on 27 December 1969, and reached #34 on the American pop charts in early 1970.