Soldier: Colonel, the Russians have captured "Fox 1"!
Colonel: Order the Savonian Company into counterattack immediately!
Someone: Charge! (with Savonian dialect)
EXPLANATION: Few days back, was having a beer with my friends at "Ruby & The Fellows" in Tampere, and we discussed about Finnish comics (and especially about "Fingerpori" by Pertti Jarla, in which the verbal humour is often based on wordplay and puns) when Mr. Haverinen brought up this idea. I promised to draw this.
FURTHER EXPLONATION: The joke is in the regional difference in sauna custom. Leafy, fragrant boughs of silver birch (to beat oneself with in sauna) is called vihta in West Finland, and vasta in the East. Thus, when ordered into vastahyökkäys (counterattack), well... you get this.