You choose which opponent or planeswalker an opponent controls that each token is attacking when it is put onto the battlefield.

Although the tokens are attacking, they never were declared as attacking creatures (for purposes of abilities that trigger whenever a creature attacks, for example).

Whenever Hero of Bladehold attacks, both abilities will trigger. You can put them onto the stack in any order. If the token-creating ability resolves first, the tokens each get +1/+0 until end of turn from the battle cry ability.