The Virginia and the Monitor, e.g

• Teams following smooth Commonwealth forces
• Oliver Cromwell
• Old ___ (Boston sight)
• Cavalry is pressing round flank
• "Old" ship's name
• "Old ___"
• Hull's was ''Old''
• Puritans press on the borders

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ironside \I"ron*side`\, Ironsides \I"ron*sides`\, prop. n. A nickname for Oliver Cromwell. A nickname for Edmund II of England. --RHUD