NATO Phonetic Alphabet: Letters a word at a time
Learn the NATO Phonetic Alphabet and integrate it into your communications strategy, it will help you execute your plans efficiently. There is a reason why its use is prevalent around the world in one way or another, it works.
You can make games around this to teach younger members, heck, all members of your group. Also, don’t be shy, print out flashcards and hand them out to your partners in preparedness.
Print out paper strips with the alphabet or whole pages, laminate them and post them next to communications stations, mobile phones, and HAM radios.
When you go hiking, use your mobile or cheap radios, make an effort to use it for real communications between parties.
Communications will be a key part of your plans, prepare for it, there are man resources that can help you with that. Get a hold of a Vet at Legion post and talk to them about it. Gain from their experiences.