Tomorrow, When the War Began, Australia's highest-grossing movie of 2010, was written and directed by Stuart Beattie. It was adapted from John Marsden’s novel of the same name, the first in his seven-book Tomorrow series for teenagers, published 1993-1999. They tell the story of Ellie Linton and a group of her high-school friends who have to try to save their country from an invading militia after their hometown of Wirrawee has been taken over, their families taken prisoner and their homes destroyed.

If war is such hell, why do we keep doing it? This may be one of the questions you'll be asking yourself after sitting through the taut and gruelling 100 minutes of Armadillo, Janus Metz's remarkable account of a six-month tour of duty in Afghanistan with soldiers of Denmark's Guard Hussars.

There are certain film-makers who like to give themselves a headache. Buried confined its only character to a coffin. Phone Booth stuck Colin Farrell in – what else? – a phone booth. Essential Killing imposes another kind of confinement on its main character: it maroons him in silence. It could be argued that cinema has long experience of keeping its mouth shut.

Matthew Bissonnette’s third feature Passenger Side is a mellow, honey-hued road movie which sees two discordant brothers combing the streets of Los Angeles with an initially mysterious purpose. A likeable diversion, for the most part it’s a nicely played two-hander depicting the rekindling of a sibling bond.

With his debut film, Moon, Duncan Jones demonstrated that a sci-fi movie doesn't have to depend for its success on fleets of warring spacecraft or flesh-eating alien monstrosities. He's done it again with Source Code, a cool and clever thriller in which futuristic anxiety and mind-bending scientific theory are firmly anchored in almost mundane reality.

This film tells an extraordinary - scarcely believable - story. Throughout the 20th century, the UK sent tens of thousands of children from care homes and orphanages to the colonies, later the Commonwealth. Parents were routinely told their children had been adopted by British families, while the children were told in many cases that their parents were dead. Children had been sent to the colonies since the 1600s but in the 20th century there was a formal nationwide policy organised by churches, local authorities and Dr Barnardo’s homes, which stopped only as recently as 1970.

Hollywood stars are well known for bragging they do all their own stunts, often at the expense of the genuine daredevils who risk their lives on their behalf. With the advent of CGI and motion-capture technology, though, it is becoming increasingly difficult to make such an idle boast. What’s an icon to do to prove their mettle? The answer, it would seem, is to do all their own singing, even when they are patently ill-equipped to do so.

The first thing that must be said is the paintings, captured by Herzog and his crew, are breathtaking beyond description. Among the animals depicted with remarkable clarity are mammoths, horses, bison, rhinoceros, ibex, lions and the only known instance of a panther in paleolithic art. There is even a giant creepy crawly clambering up one wall. And the cave itself is a mini-miracle of preserved evidence. Skulls of a vanished species of bear litter the floor, while their claws left the first scratch marks high on the walls some 40,000 years ago.

A chorus of "Hooray! No CGI!" has greeted Kevin Macdonald's new film version of Rosemary Sutcliff's popular novel, The Eagle of the Ninth. Not for him a Gladiator-style digital Rome, or Troy-like computer-generated navies stretching away into infinity.

In Wake Wood, Aidan Gillen and Eva Birthistle play a married couple who lose their nine-year-old daughter in horrific circumstances. In mainstream cinema, this would lead to the earnest soul-searching and Oscar-bait performances of films like In the Bedroom, The Door in the Floor or Rabbit Hole. But Wake Wood is the latest film from the new-model Hammer Film Productions.