I am looking for a children’s (young adult) book whose name I do not know.

I read the book in the early 1950’s, but would guess that based on the illustrations in the book it was probably written before or at the beginning of second world war.

The book is the story of a child (possibly English) who collects toy soldiers which he uses to fight mock battles with other children. He is lured into fighting an unfair battle with his nemesis, and as a result loses all his soldiers. Due to circumstances that I do not remember he gets a chance to create a new army of toy soldiers which he uses to defeat his old enemy.

The book is well illustrated, Showing WWI (or at least British) toy soldiers and equipment.

Unfortunately I do not remember anything else about the book. the cover was missing when i got it. It could have been published in England.