Here is a simple recipe for " traditional Scottish Soda Scones" that I like:

1/2 cup flour
1/2 tsp Baking Soda
1/2 tsp Cream of Tartar
pinch of salt
2-3 oz of milk

mix dry ingredients with enough milk to make a "workable dough". Spread out (roll) until about 1/2 inch thick. Cook in buttered frying pan over medium heat about 4 minutes, or until slightly brown, then turn over and cook until lightly brown.

This is not my recipe; I found it here (full instructions):

I like this because it is quick, simple and tasty. It also (being pan cooked) seems like Bannock, and might be adaptable for the field.
"Better is the enemy of good enough."