The Finnish obsolete units of measurement were derived from natural actions or objects such body parts, later standardised for the purpose of commerce.

The Finnish units performed far better and made some good advance, before they had to stop because of an overstretched front.

There were other Finnish units that were assigned similar tasks, although more limited in range, as the ErP 4.

More Finnish units joined the battle along with the German 303rd Sturmgeschütz brigade.

The Finnish units had been spread out and mixed in the battle, which made the organization of a concentrated defence difficult.

Time after time, it created new minefields, dug strongpoints and trenches and skillfully evaded encircling Finnish units.

A 250-strong Finnish Red unit escorted the trains from Petrograd to Viipuri.

On 21 June, Finnish units began to concentrate at the Finnish-Soviet border, where they were arranged into defensive formations.

As before, these divisions were trapped as the more mobile Finnish units were able to counterattack from the north to flank the Soviet columns.

The Soviets suffered 7,000-9,000 casualties, while the Finnish units lost only 400 men.