Battle 7th. Mass Regiment???

One of the first settlers of what's now the far eastern Maine town of Roque Bluffs was Anthony Shoppe/various spellings.

Anthony was a disabled Rev War soldier.From a combination of records it can be established that he was disabled by a battle wound about September-October 1781 while serving with the 7th. Mass. (John Brooks' Reg. and Jonathan Maynard's 6th. Company), perhaps near "Peekskill".

Can anyone identfy the possible battle(s) or suggest resources to research?

Thanks
John Preston-Roque Bluffs