We'd need some NPC to the space between me and Franco-Iberia.
At first I thought about a Germanic faction but given I already have some Germans that may not make that much sense.
How about a Gall Republic?

BTW, I added some info on my military, including my HK-56 tanks. They are basically a successful MBT-70 but with some tech closer to the T-55 or T-64.