is this free or you actually need to spend background feat for this?Something like:
You grow up learning to fight alongside the adults who defend your community. You are a young member of a combat group, such as the warriors of your family clan, the army reserves of your town, the students of a military academy, or the enthusiasts of a combat sports organization.
Choose three of the following benefits:
• Proficiency with all Simple Weapons
• Proficiency with one Martial Weapon, or all Martial Weapons if you choose this option thrice
• Unarmed Strike deals 1d4 damage, or 1d6 if you choose this option twice
• Use of any proficient weapon as your spellcasting focus
The following count as two choices:
• Training with Shields
• Training with Light Armor
• One cantrip that deals damage
Repeatable. You can take this feat more than once.
Note. Four choices is fine, but three choices is on the safe side.