Safely across the Dutch frontier, Dobbs increased his pace.

The German army had to shorten its front and use the Dutch frontier as an anchor to fight rear-guard actions.

Miles to the west there was the rumble of anti-aircraft fire as the returning bombers passed over the massed batteries near the Dutch frontier.

By now, the lead tanks had burst out of the bridgehead and were across the Dutch frontier.

They moved on, ready for the final and most difficult stage of their journey - crossing the Dutch frontier.

She was put over the Dutch frontier.

In the next few moments the news came through that German troops had crossed the Dutch frontier and that Amsterdam was now being bombed.

Staff officers informed His Majesty that the Dutch frontier had been successfully crossed.

Those pictures showed a typical seven- teenth-century Dutch frontier home, built of mortar and local stone, small, low-roofed, and narrow-windowed.

The French retreated of their own accord from the Dutch frontier.