Food, or rations, would have been similar. Very often the army would all be eating the same thing, however your rank decided how many rations you received. Officers were authorized extra. This was not always the case, however. When no provisions were available, the entire army went without.
Pay is a whole complex issue.
Both British and American soldiers were severely underpaid. The fact that inflation was so high led to even more problems. Rates varied tremendously. Throughout the war, these wages would increase. Inflation, however, dogged the army, enough that it created a huge morale problem which Washington had to deal with.