According to the author, one key political purpose behind incorporating the volunteer battalions into the regular army was for which of the following reasons?
1) Due to real and perceived threats both internally and externally the revolutionary government needed more immediate manpower to draw upon.
2) To infuse the volunteers with the patriotic spirit of the regulars.
3) The Montagnards viewed the volunteers as a potential Girondin military force because they were led by local notables that were generally hostile to them.