This is coolbert.
Impressed and forced labor during the Second World War indeed able to sabotage the war effort of the enemy!
Sabotage Japan, American style.
Understand that it was not alone impressed and forced labor of the Nazi that occurred in World War Two [WW2]. American and allied prisoners-of-war [POW] of the Japanese also compelled to work at in heavy industry, performing a variety of tasks to include that of dock worker and low-level menial.
From the book: "Unbroken" by Laura Hillenbrand.
"At work sites, Omori's POW's were waging a guerrilla war. At the rail yards and docks, they switched mailing labels, rewrote delivery addresses, and changed the labeling on boxcars, sending tons of goods to the wrong destinations. They threw fistfuls of dirt into gas tanks and broke anything mechanical that passed through their hands. Forced to build engine blocks, American Milton McMullen crafted the exterior well enough to pass inspection but fashioned the interiors so the engines would never run. POW's loading at docks 'accidentally' dropped fragile items, including a large shipment of wine and furniture en route to a Nazi ambassador. . . . Coming upon the suitcases of the German envoy, POW's shredded the clothes soaked them in mud and oil, and replaced them with friendly notes signed 'Winston Churchill.' They drank huge quantities of tea and peed [urinated] profusely on nearly every bag of rice they loaded. And in one celebrated incident, POW's loading heavy goods onto a barge hurled the material down with such force that they sank the barge, blocking a canal."
The entire aspect of forced and impressed labor during World War Two also closely related to the topic of "Hell Ships". Devoted readers to the blog might want to see those archived blog entries regarding the "Hell Ship" in both European and Pacific theaters.