I here's bud.... Life's what ever you make of it, a lot of young people have screwed up in the past and thought the last resort is the Army... and gone and done it, loved it etc.
My mate was in the same boat ish, he left school with ok but not great grades, He's abit of a D*** really a mate but not a great mate (the kind that would backstab you if he could) He started College on a work placment scheme train as you go type of thing, not an apprenticeship as such, He got a placment in a Shop work place studing retail NVQ's he did this for 2 years but went from placment to placement because of his attitude to work so in the end he worked in about 8 different shops in the 2 years..... got the NVQ's Level 1, 2 and Mid way through 3 then jacked it all in thinking that was no life for him.
And tobe honest he was not bright enough to do anything more than Retail.....Shop assistant.
At 18 he decided to Join the Army, did the training, found it hard but got through it with the help of his family and us mate's when he came back at the odd weekend - we would go out and have a laugh.
Now 12 Years later he's done everything you could imagine in the army, he joined almost every army sport they do, Boxing, Foortball, Skiing and more this is the kind of stuff you do in the spare time in the Army, he's been to god know how many countries fighting and defending our country, He's changed his role in the army so much he can cover most job's in there, from tank gunman to front line infentry, fighting in Iraq. a lot calmer now though as for the last 6 months he's been living in the UK in a house paid for by the Army to drive one of the top bosses in the Army around, Yes this is an actual job for him, he still get's his full wage and the house paid for, He earns more than me and get's to live for free........he still does a tour 6 months of the year abroad where ever they send him but the rest it's an easy life, racks up about £3000 a month and he's lucky if he spends much of that while he's away, so when he's home he's loaded and with no rent or morgage to pay......
He loves it and so glad it sorted his life out.
BTW he's one of the lucky's one's this story could have had an early end as you are fighting in the army and many can get killed.... remember that it's a gamble, if your going to do it you have to give it 100% all the way.....
Good Luck on your choice - I'd way speak to an Army advisor though!