From the blade profile, it looks to me like what you have there is not a shortened machete. Rather, it appears to me to be a US Marine Corps No. 1001 Intrenching Machete (sometimes spelled "Entrenching"). These were made by Collins and Henry Disston. Collectors sometimes call them the 'square tip bolo', but the Marines considered them a machete and featured them in the Landing Force Manual of the 1930s. They are a heavy duty blade and are sometimes seen in WW2 pics, although I think they were obsolescent by the start of the War. They are similar in size and heft to the USMC Medical Corpsman knife.
I have examples of both the Disston and the Collins in my collection but can't seem to find any pics of them handy right now. A search of the Forum will turn up some other threads on the No. 1001 machete.
This machete typically had wooden scales. I have never seen one with black composition handles shown on your example. Very interesting.