The headquarters of the regiment was presently moved from Ruppin to Oldenburg to hold the pass against Tilly's advance, and here they too came into action. They were ill supported by their foreign comrades, for the Danes gave way, the Germans of Christian's army took to their heels, and the brunt of the engagement fell upon half the regiment of Scots. After two hours of heavy fighting they were relieved by the other half, and so the two divisions, taking turn and turn, maintained the struggle against vastly superior numbers from seven in the morning till four in the afternoon, when the enemy at last drew off owing to the darkness. The spirit shown by the Scots was superb. Ensign David Ross received a bullet in the chest; he retired for a few minutes to get the wound dressed, and returned to the fight; nor did he afterwards miss an hour's duty on the plea that he was wounded. Hector Munro of Coull, being shot through the foot, refused to retire till he had fired away all his ammunition, and before he could do so was shot in the other foot also. Yet another, Hugh Murray, being ordered to bring away his brother's corpse under a heavy fire, swore that he would first empty his brother's bandoliers against the enemy, and was shot in the eye, though not fatally, while fulfilling his oath. Yet these were young soldiers, of so little experience that they left their reserve of ammunition exposed, and suffered heavily from the explosion of a barrel of powder. They lost sixteen officers and four hundred men that day. That night the Danish army retreated to Heiligenhaven, but some German Reiters that were attached to it were so unsteady that they speedily turned the retreat into a flight; and when the harbour was reached the cavalry crowded on to the mole to seize all the transport-vessels for themselves. Sir Donald Mackay, who was himself wounded, was not the man to suffer his regiment to be sacrificed; he calmly ordered his pikemen to advance, swept the whole of the Reiters into the sea, seized the nearest ship, brought others out of the roadstead and proceeded to the work of embarkation. The last boat's load shoved off surrounded by the enemy's horse, and the last of the Scots, a gallant boy named Murchison, though wounded in the head and shot through the arm, swam off to the boat under a heavy fire, only to die two days later of his injuries. The rest of the Danish army, thirty-five troops of horse and forty companies of foot, surrendered without a blow. Hence it is hardly surprising that, when next the Scots found themselves in quarters alongside Danish horse, there was a furious riot which cost the lives of seven or eight men before it could be suppressed. But in truth Mackay's regiment was so much weakened by its losses that both colonel and lieutenant-colonel returned perforce to Scotland to raise recruits. [Sidenote: 1628.]