Complex sentence: Later in 1943, the Spanish Government, still under pressure from the Allied governments, ordered the closure of the remaining ship-watching stations and there is no evidence that any stations operated after January 1944.
Split into simpler sentences: Later in 1943 the Spanish Government, which continued to be under pressure from the Allied governments, ordered the closure of the remaining ship-watching stations. There is no evidence that any of the stations operated after January 1944.