[4] Halfway through 1597 the government at The Hague, with improved funding, ordered a new campaign for Maurice of Nassau, Prince of Orange, the commander of the Dutch and English troops, to oust the Spanish while they had been preoccupied with the siege of Amiens.

On 1 August 1597 Maurice along with his cousin (and brother-in-law) William Louis left with 7000 infantry and 1200 cavalry which included thirteen companies of English and ten companies of Scots, both cavalry and infantry commanded by Colonel Horace Vere[1][6] Maurice's first target was the important military and economic city of Rheinberg which for seven years had been under Spanish occupation.

[7] After a ten-day siege on 19 August the Spanish surrendered the city and Maurice then headed to the south, where Moers was located.

[2] Sitting on western bank of the Rhine, Moers consisted of a fortress with a castle, Herman van den Bergh, the governor of Spanish Upper Guelders, reinforced the city with additional troops which totaled 400 soldiers under the command of Andrés de Miranda.

[7] Moers however offered little resistance to the Dutch and English; with parts of the wall crumbling and even before the attack was launched on 3 September, de Miranda negotiated for terms which Maurice accepted.