I do not own Metal Gear, the series or any of its characters, nor do I own Shingeki no Kyojin or any of its characters. This is a work of fanfiction.

…

The battle continued rather smoothly, with the Metal gear assisting the regular military forces. The GAU-8 30mm Gatling guns made short work of even some of the larger titans. On occasion, it would even fire HEF (High explosive, fragmentation) missiles at them, which was typically only done when line of fire between the Gatling guns and the targets could not be established.

After moving through the village to secure any civilians that hadn't been evacuated yet, the regular military forces caught up to Rex. Some of the only complaints were that Rex was cutting the titans down too fast for any of the regulars to get many kills. "Sword Five Delta to unknown unit, over." Connie called over the radio.

"Kid, you can call me Snake." Said the voice of the 'unknown unit'. "Besides, you can worry about talking to me after that titan behind the house 4 doors down is dealt with."

Connie looked through his scope, but didn't see what Snake was talking about. "What do you mean? I can't see anything." He replied.

"I can see it on thermal. Maybe one of your tanks can get it, nothing I have on board wouldn't destroy that house entirely." Snake replied.

Eren turned down the street to look for the titan. "Oscar One Bravo, moving to target, main gun loaded, over." He called over the radio.

Eren's tank moved down the street reasonably fast, keeping the gun aimed at the suspected location of the titan. The titan started walking out into the street, which was a fatal mistake. Eren raised the gun to aim at the titan's neck, and fired. Again, the APFSDS round cut through the titan as if it were a blowtorch cutting through butter. "Oscar One Bravo, another one down, over." Eren called over the radio.

Sasha was the next one to call a contact on titans. "Sword One Charlie, reporting a group of titans at grid Two-One Hotel, x-ray four, yankee one. They're still a good ways off, but there are a bunch, approaching from near the lake, over."

Snake chimed in. "Don't worry about them, someone will handle it." He said with confidence, knowing what was about to happen.

Another Metal Gear, this one called "Ray", soared from out of the lake, landing in front of the group of advancing giants. Everyone watched at the distance as Ray's head opened up and began shooting a beam of pressurized water at neck level with the titans, powerful enough to slice their heads off quickly, and accurately, as they didn't seem to get up afterward.

"Took you long enough," Snake began. "A couple of seconds longer, and I would have gotten them."

"You know with all of the trees, leaves and mud in this lake, it takes a while to fill, because the filters are getting covered up."The voice from inside Ray called over the radio.

The regular military units were increasingly thankful that not only were the Metal Gears were not hostile, but also because of the burden they were taking off of the regulars. Commander Pixis came over the radio. "Capone Actual to, Snake, was it? Over."

"Go ahead, actual." Snake responded.

"Interrogative, what is your purpose of being here, fighting? Over." Pixis asked.

"We were closer, and I might lose sleep if civilians get killed because of my inaction."

"Good to know, Snake. Thanks for the assistance, over."

…

With all parties involved, Dauper village was re-taken swiftly. After the village was secured, everyone gathered on the edge of town. Sasha was particularly happy that her home was safe. "Sword One Charlie to Snake, over."

"Go ahead." He replied.

"I just wanted to personally thank you for helping to save my home. We may have been able to take it eventually, but you guys made it so much easier and faster." Sasha beamed with a smile. "Plus, nobody died. Thanks for helping."

Mikasa ran up to join the group, and went to stand with Sasha. The two shared a brief kiss, and began holding hands. "Are any of these houses for sale?" Mikasa asked.

" Umm, probably," Sasha began. "Especially after today, I would think more of them would come on the market. Why, what's on your mind?"

"Well, maybe when all of this is over, and we get out of the service, I'd like to entertain the idea of moving in with you."

Sasha started to blush slightly. "If you really want to, we can find a place here."

Rex turned to the northeast and Snake called over the radio "Huge energy spike coming from the northeast, big enough that it's showing up on radar."

A bolt of lightning cracked the sky and struck well off into the distance, throwing up a massive cloud of smoke. As the smoke cleared, the regulars began to feel uneasy as the colossal titan came into view. Snake flipped a switch in Rex, which readied the 18.5 meter long rail gun. Electricity could be seen crackling between the rails as it built up a charge which everyone on the ground could feel as the hairs on their arms started standing up.

The 422mm "Widowmaker" aluminum slug flew out the front of the weapon after it reached its optimum charge. This created a strong gust of wind that could be felt for almost a quarter mile, as well as a ballistic crack that sounded more like a large explosion. The aluminum round struck the colossal titan, but he had moved just far enough so that the round struck his neck to the side, far enough from the weak spot so that it caused little damage.

"Everyone, get to cover." Snake called out. "I've got to use the contingency plan here."

Another large projectile was loaded into the rail gun as it charged, this one appearing orange in color, unlike the polished aluminum round that had just been fired. This was the MPW-47 422mm "Day wrecker" gun-type fission weapon (similar to "Little boy" used at the end of WW2, but modernized).

Snake waited for all of the ground forces to be in cover, then fired. The aptly named Day Wrecker met its mark, although not absolutely needing to, due to the nature of the weapon. The weapon detonated, creating a blinding flash of light and a thermal pulse which instantly vaporized anything within two miles, as well as pushing out a shock wave that dissipated enough by the time it reached the regulars so that they were left unharmed. After the mushroom cloud cleared, the colossal titan was nowhere to be found, as was its MO. Nobody believed that the weapon had killed it, even Snake.