I've been thinking about combining land & sea operations for Dystopian Wars in an urban environment, and I started tinkering with a scenario which features a city with several large canals and bridges. I set up the scenario this past Sunday for two local players along with some infantry rules to playtest.
Unfortunately, I forgot the box of land templates I had cut out at home, so I pieced together the equivalent using sheets of paper and some pieces of green felt. The objective was the single bridge in the center of the table, flanked by a clock towers which could be captured by infantry or rocket marines. The Imperial force managed to steam up into the channel and capture both clock towers after destroying lead aerial elements of the opposing British force.