Best thing you can do to get more squadrons included.
Research your wanted one and post all information on the ROF-forums.
I want a format before I do the work. I just posted over at the RoF Forums.
Since I've done so many squadron bios, the main format you want for the biography is to have an initial section that details the unit's WWI history. Depending on the unit and the info available, this may be long or short.
After the WWI section, create a title called "Post-WWI History" and then continue the unit's history below that. This typically covers the inter-war years, WWII, and the post-WWII years. This section can also be long or short, again depending on the unit. Some of these units disbanded and haven't been around since the 70s or 80s, while others are still active today.
If you need some guidance, look at these unit histories I've done:
-All the playable RE8 units
-27th Aero Squadron