I hunger to know whether it's true that an "s" at the end of such adverb as "inward", "forward", "backward", "outward", "upward", "downward", and "toward" (as a preposition only) is a choice of British English only?
I was analyzing these words and noticed that without the "s" at the end the word is used as an adjective in Br.E, except for "toward" that seems to be archaic as adjective.
- I was going forward (Am.E)
- I was going forwards (Br.E)
- It was a forward attack (Both Am.E and Br.E since forwards is incorrect as an adjective)
Are my presumed assumptions correct?