Regimental Sergeant Major Percy Lansdale is a battlefield veteran through and through. But to top brass, he’s an outdated relic—so they pack him off back to England to sit out the war training raw recruits. Percy is furious; his place is on the front lines with his battalion, not babysitting rookies.  

When twist of fate drops him right back into the heat of the action, the old soldier seizes the chance with both hands. Armed with grit, decades of experience, and something to prove, RSM Lansdale sets out to show the "whipper-snappers" exactly how a real professional fights!