The description is very confusing and cryptic – so here is the exact release note from the author:

I had hoped to work on this a little more before the 4th, but it doesn’t look like I’ll have time. So… For those in the US – Happy Independence Day (a little early). It should be obvious how to play. If you can make it past 1781 you will “win”. (Yes, I know the war didn’t end until 1783, but nothing much happened after 1781).