A/N: This is my first attempt at a crossover! Yay! I've been wanting to do something with FMA for a while, so I'm really glad that I finally wrote this out. Much will be explained in the next few chapters (once they're fully written), but just for your info: plotwise, the FMA portion is based off the anime and takes place 22 years after CoS. So yes, Ed is 40. And for those of you who can't do math (or don't know their European history), that means it's 1945. Hmmm, that year rings a bell... Oh, and one more thing. I do not own. Well, FMA or HP, that is...

Chapter One: The Summons

A tawny owl had arrived at his office that morning. He hadn't particularly wanted to open it, for he already had a pretty sound theory as to what it contained. The Ministry always came to him when it was in trouble, and this time the dilemma was dire. Gridelwald had been acting up again, and of course it was up to Albus Dumbledore to "save the day." Albus knew he had been putting off acting against his former friend for far too long. He just couldn't bring himself to believe what Gellert had become. He used this disbelief as an excuse to procrastinate. But he couldn't get away from it anymore; he'd actually have to do away with Gellert this time.

He took the letter in his steady hands and stared at it for a moment. It had just barely managed to reach him at Hogwarts. He was planning to leave in the next hour or so for his summer home in Godric's Hollow; he just had a bit of packing left. The golden lettering on the dark gray of the envelope spakled a bit in the sun shining through the office window, spelling out his name with great curly-cues and flourishes. This was clearly a private letter, as the Ministry had wanted it delivered to his office, not the Great Hall with the rest of the post that morning. He slid his fingers under the darkly stained parchment of the envelope and cautiously removed its contents. The letter inside was neatly written and concise. If one was being picky, it could be termed "blunt." Albus read it a couple of times over to make sure he got the message right.

Dear Professor Dumbledore,

It has come to our attention that you may have some information concerning the Dark Wizard Grindelwald. We request that you join our research teach immediately. Please meet us at the Leaky Cauldron tomorrow at precisely 9 o'clock in the morning. The barman will direct you to our meeting room.

Sincerely,
Mason Trevor
Augusta Longbottom
Edward Elric
Minerva McGonagall
Elsa Lee
Renault Potter

Albus recognized all of the names. Most of them had been students at Hogwarts in the last five years. Only one was much older, and he wasn't even a proper wizard! Dumbledore stopped for a moment and reminisced about his encounters with the man. Edward Elric, the Fullmetal Alchemist, he thought. Well at least he might be of some use in this war, with his alternative use of magic. The rest of them won't achieve much of anything though… he considered with a grimace. The lot of them had less than fifty years experience; Albus alone could top that. It seemed that they really did need him to help out. The Ministry had been relying on foreign Wizarding government systems up until now to deal with Grindelwald; now they were finally becoming serious, realizing that they had to intervene. Albus crumpled the letter and threw it into the fire. It was about time he gave up his fears concerning Grindelwald and took matters into his own capable hands.

A/N: So, did you like it (or hate it)? Like I said, a lot more is coming in the next couple of chapters (like the FMA part of things). This is more of an intro than anything else, so yeah... Let me know what you think and review!