Charge to Battle: Nick Ryan's World War 3 Military Fiction Technothrillers, Book standalone

As Russian troops pour into northern Poland, an elite Platoon of American scouts in Stryker reconnaissance vehicles faces a dangerous assignment: they must clear the route ahead for a US Cavalry column preparing to counter attack the flank of the enemy spearhead before it reaches Warsaw.
But the scouts' difficult mission is made even more complicated when a Company of Polish militia are added to the counter attacking force, and a vital bridge is found to be defended by the enemy. Faced with an impossible battle to win the bridge, and the challenge of unreliable Polish allies, the Cavalry scouts must find a way to fight through a dug-in Russian force that is determined to hold the vital crossing at all costs.