Going camping with Junsu and Yoochun had been a lot of fun. It was daylight. Even though it was chilly, the sun was shining. There was food and soju and a place to sleep that someone else had set up ready for us. There were funky clothes and a lot of laughter and—of course—a camera crew.

Last night, there wasn't a shred of that. It was dark, and damp and there were ten of us, all exhausted from a long march and hungry to boot. Field rations don't just taste of very little. They don't keep you fed for very long, either.

On paper, during the pre-exercise briefing, it had looked an easy enough task for ten guys to put up a large tent, prepare a meal and schedule a watch rota before going to sleep. In practice it was six shades of ed up. So we got to do it over. And then again for good measure.

It was past midnight when we were finally allowed to eat our dinner and go to sleep, only to be woken again when it was our turn to stand watch.

The trek home today was three times as long, I swear.