With a heavy sigh and a firm long stroke to his huge, hard cock, Jack uses all his willpower to avoid running out of the tent. Instead, he approaches the struggling Carlos, whose lips have swollen up and whose shirt has split open to expose his tight, muscular, furry chest.
"Lets get you out of those." he says with some difficulty, speaking for the first time with his equine tongue.
Hefting Carlos up with incredible strength, he forcefully unzips the other soldier's pants, freeing his buddy's own transforming cock, balls and emerging tail. Removing the pants with Carlos' briefs, Jack chucks them aside.
"Shouldn't have worn briefs." he taunts Carlos as his huge nuts are allowed to finally swing down between his legs, his beer-can thick cock folding upward into his growing sheath.
Once more Jack finds his hand traveling up and down the length of his own still rock-hard horse cock, the mare's odor irresistibly close, the proximity between himself and the transforming Carlos causing his cock-head to occasionally brush his friend's anthro horse body as his changes complete.
Sable mane sprouting down his taut, sculpted back, Carlos quivers, letting out a whinny as his nostrils push out and his face reshapes, enabling his olfactory system for the first time to detect the nearby mare's seasonal scent. Pointy ears repositioning themselves atop his head, his legs painfully cracking as he suddenly falls over, feet turning into hocks while his toenails darken into hooves, Carlos finds his own dick responding to the mare's enticement, his new equine "horsehood" emerging from its sheath and becoming equally as hard as Jack's.
Jack's stroking increases as he sees Carlos' thick, stallion-cock stiffen up, and he finds himself in a peculiar position as his bunkmate falls onto his knees, his face positioned almost perfectly with his enormous cock.
"Sorry, buddy, but I need this...right now...and I did help you." he murmurs, voice filled with the lust he's fighting, his animalistic urges and needs, spurring him into actions he'd otherwise wouldn't consider.
Grabbing the back of Carlos' head, his other hand pulling his enormous horse-dick in line with Carlos' mouth, Carlos bucks and whinnies as he realizes what's about to transpire. With great force, Jack shoves his thick, ebony horse-cock into Carlos' muzzle, and with a sigh of relief, he begins to face-fuck him, coaxing as much of his two-foot long dick as he can into his bunkmate's massaging throat.
"Aaaaah, yeah...." Jack moans loudly, his mane shivering in pleasure, "I'm real sorry about this Carlos, just need to get off right now, before I explode."
Soon after the two discovered a rhythm, Carlos relinquishing, surrendering his efforts to fight, his hand instead moving down to his own needy cock to stroke himself. As the seconds turned to minutes, Jack could feel his balls expanding in his sac, and pulling up close to his body. With a final, bestial thrust, shoving as much cock as he could into Carlos' gut, he whinnied loudly, spilling his seed into his buddy. Quart after quart of anthro stallion-seed spewed into Carlos' stomach, Carlos' own thick horse-cock suddenly becoming impossibly rigid as cum began to shoot from it as well, covering Jack with his sticky cream.
When the two finished their marathon orgasms, a new thought popped into Jack's head: an image of his cousin, John, and his company, not too far from where they were now, all turned into huge Minotaur soldiers.
"Woah..." Jack whispered, stepping back and letting his cock fall out of Carlos' mouth to dangle over his nuts, his hand raising to his head as the new memory invaded it. "Carlos, you might not believe this, but I think we're contagious, uh...I think others might become like us if we interact with them. Something similar's happened to my cousin's troop, except their bull-men now instead of horses."
Carlos stood up, his eyes for the first time examining his fully transformed anthropomorphic horse body. "I think a lot of guys would be pretty happy with this..." he groaned, gripping his huge horse-dick. "Don't know 'bout the rest of the package, though. Hm. Also, I wonder if women become mares..."
Jack chuckled at his buddy, and squeezed Carlos' retreating dick, "They just might. Either way, we should get out of here and meet up with my cousin. I don't think many would understand what's happened to us. Hell, I don't. We'd probably be locked up in a lab for study."
Carlos nodded in agreement, "How do we get to your cousin's transformed unit and where should we go?"