A statue of three war heroes greeted Heather as she walked into the McIrving training camp, 20 miles outside the capital. The statue was of a unit that served in the Great War that ended less than a decade ago.
One of the gunners stood tall, behind a portable tripod machine gun. The other was dropping into a kneeling position, pulling a rifle out of her basketball-sized bust. The ammo girl was kneeling, hands bracing her enormous bosom. Heather thought the statue must be exaggerated, but it was completely possible to have breasts five feet with nearly four feet of cleavage, and who knows how much volume could fit in there. There was probably as much metal in her chest as there was in the entire body of the gunner standing upright. The ammo belt for the machine was feeding out of the cleavage of the ammo girl, and by the look of it, she had many many more rounds hidden in those overfilled jugs.
Heather eyed the ammo girl's bust with envy. She was never the pretty girl, just cute and short. Her arms and back were strong from helping out on her aunt's farm. Her real asset was her ass. It jiggled like a bowl full of jello, and when she sat down in a window seat on the bus to the training camp, her booty filled her seat and squeezed into the one next to her, while also filling the space between her seat and the side of the bus. She had barely had room for her duffel bag. Her hips were broad, and swayed side to side as she walked, giving her walk a sort of swagger and shake that filled her self confidence.
There are a few combat roles in the Army of Sien. The most obvious are the ammo girls. They use the "natural" abilities of the women of Sien to hold things in their cleavage and expandable busts to transport and store large quantities of ammunition and weaponry. These girls are often shorter than the other soldiers, and develop remarkable proportions as a result of their work. There is the general infantry as well, and they often get teamed with ammo girls, one for each breast.
Then there are the B.U.S.T. They are amazons, rarely below 6 foot 3, always above a natural G cup. They work in pairs to perform missions of high importance and high skill. Their well-packed busts are full of weapons, ammo, food, and survival gear. As a necessity to mobility, they never fill up past beach ball size, because even with their intense training, once their flesh melons swell past that point, there's way too much wiggle and jiggle to make running possible. They're survival experts, and often get dropped behind enemy lines with nothing but their tits and their wits to get them home.
Heather made it to her assigned barracks and dropped her duffel off on her bunk. Exhausted, she laid on her bunk and closed her eyes.
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The next thing Heather knew she was being shouted at. She sat bolt upright and slammed her face into something soft. "Oh shit I'm so sorry!" The voice belonged to whomever's tit Heather had just smacked into.
"No, you're good, I ran into you," Heather rubbed the sleep from her eyes. "I'm Heather by the way."
The girl smiled. "Jasmine," She said, "but I usually go by Jaz." Heather stood up, slightly dizzy.
"Nice to meet you Jaz," Heather said, and the commanding officers rushed them out the door, yelling the whole time.
Heather and Jaz ran with the rest of their cohort to across the camp to the med hall. Jaz was taller than Heather, at about 5'10". Her chest was impressive, filling a sphere in front of her about 10 inches across. I got to find out where she gets her bras, Heather thought. As Heather ran, her ass shook with each step. Between all of the 38 girls running across the camp that morning, there was enough jiggle to make jelly jealous.