I've written a cfg file:
[formation.0]
title=USS_CV-8_Hornet_1942_Dolittle
unit.0= USS_CV-8_Hornet_1942_Dolittle, 0,0
[formation.1]
title=USS_CV-8_Hornet_1942
unit.0= USS_CV-8_Hornet_1942_2, 0,0
[formation.2]
title=USS_CV-8_Hornet_1942_crew
unit.0= USS_CV-8_Hornet_1942_crew, 0,0
[formation.3]
title=USS_CV-6_Enterprise_1942
unit.0= USS_CV-6_Enterprise_1942, 0,0
[formation.4]
title=USS_CV-6_Enterprise_1942_2
unit.0= USS_CV-6_Enterprise_1942_2, 0,0
[formation.5]
title=USS_CV-6_Enterprise_1942_crew
unit.0= USS_CV-6_Enterprise_1942_crew, 0,0
[formation.6]
title=USS_CV-5_Yorktown_1942
unit.0= USS_CV-5_Yorktown_1942, 0,0
[formation.7]
title=USS_CV-5_Yorktown_1942_2
unit.0=USS_CV-5_Yorktown_1942_2, 0,0
[formation.8]
title=USS_CV-5_Yorktown_1942_crew
unit.0= USS_CV-5_Yorktown_1942_crew, 0,0
Hope this helps.