Complex sentence: In Summer 1940 the 125th (Northumbrian) Field Regiment converted to the 125th (Northumbrian) Anti-Tank Regimen: it deployed to the Far East and was captured in the fall of Singapore in February 1942.
Split into simpler sentences: In Summer 1940 the 125th (Northumbrian) Field Regiment converted to the 125th (Northumbrian) Anti-Tank Regiment. It deployed to the Far East and was captured in the fall of Singapore in February 1942.