Teesar ACU trousers, ripstop, Woodland
We recommend also purchasing
Mil-Tec elastic trouser blousers, two pairs
Elastic trouser blousers, "twists". Blousing means tying your pant ends above your boots. With this pair it's easy and comfortable. Tucking your pants into your boots won't last long.
These might also interest you
Woly Protector 3 x 3 impregation spray, 300 ml
This Woly preservative is designed to be used with all sorts of leather and textiles. This stuff is both dirt and water repellent.
A clip hook on the other end, keyring on the other, with a chain between them. Good for securing anything you might be carrying, like a wallet.
Alpina Trapper RJ Brown
Heavy duty full leather boots, lined with Sympatex. As you might have already guessed, these have all the nice features of proper modern boots meant for rough terrain.
A copy of the Army Combat Uniform trousers, which are currently used by the US Army. Traditional Woodland pattern, which is far superior compared to UCP. 
The trousers are equipped with two front pockets, two back pockets, two cargo pockets and small ankle pockets. The cargo pockets are huge and can be tightened with an elastic band. All pockets, except the front pockets, are closed with buttons - in the issue trousers these are fastened with velcro.
Made of ripstop-reinforced 100% cotton.
Sizes follow US standards quite accurately. Additionally we've measured the waist/inseam lengths of each size in centimetres.
Teesar is a brand of STURM, just like Mil-Tec. While not probably warproof, these should hold up nicely in casual use.