Israel’s bruising war on the Islamic militants who control Gaza has moved online, where sites like YouTube and Facebook are the new battlegrounds.

In one of the fiercest skirmishes, sides are trading fire over the Israeli military’s use of YouTube to explain its campaign against Gaza militants, saying they have terrorised southern Israel with deadly rocket fire.

Supporters of Gaza’s Hamas rulers have posted images of the devastating Israeli offensive on both popular websites and on blogs, uploading images of the carnage and suffering in the tiny seaside territory.

The militants themselves regularly update their websites in Arabic and English. In addition, they broadcast images of masked, uniformed fighters on Hamas TV, which was bombed by Israeli warplanes but continues to broadcast from a mobile unit.

Taking its campaign to the virtual world, the military spokesman’s office has opened a YouTube channel containing footage it says was taken during the five-day Israeli assault against Gaza’s militant Hamas rulers.

One of the aerial surveillance videos shows about a dozen figures the military says are militants loading rockets onto a truck. The men are eventually targeted by an air-launched missile and disappear into a white cloud as the truck explodes.

”The blogosphere and the new media are basically a war zone” in a battle for world opinion, military spokesman Major Avital Leibovich said today. The YouTube channel - and a new blog the military is launching - are an important part of Israel’s attempt to explain its actions abroad, she said.

In modern-day warfare, some battles are conducted through the media, says Gideon Doron, former chairman of the government agency that oversaw the privatisation of television and radio services in Israel.

”Many of the victories of modern warfare are mediated by the media,” Doron said. “We have internet and all kinds of modern communication, and the Israeli military apparently decided that it has to broadcast its message through these tools.”

But just as people have taken sides in the actual fight, so, too, have they taken sides for and against the clips themselves. YouTube briefly pulled the clip on Tuesday, saying it was inappropriate, only to restore it a few hours later, labelling it inappropriate for minors, the military said.

”We were saddened on December 30, 2008 when YouTube took down some of our exclusive footage,” the military wrote on its YouTube channel page. “Fortunately, due to blogger and viewer support, YouTube has returned the footage they removed.”

YouTube did not immediately reply to an email requesting comment. In the past, YouTube, which is owned by Google Inc, has been pressed to take down videos depicting violence. The site has no automatic review process, so anything posted runs until a viewer flags it and asks that it be taken down.

The military says its clips have attracted more than 230,000 hits since going online on Monday.