I found a pension application for the James Pease b 1754, but nothing on your James Pease b 1746 in the pensions or war rolls. You could get help from the www.sar.org
website by clicking on Membership and Research Service. The Research Service is an hourly-based search of the various sources available within the NSSAR Genealogical Research Library. The various sources available may include but are not limited to NSSAR applications, documentation records, family Bible, online services, and other Genealogical Societies.
The DAR site may have information on these ancestors.