Reassembly (noun)

1. The act or process of putting something back together after it has been taken apart.
2. The act of gathering together again after a period of separation or scattering.

Origin:

Late 17th century: from re- + assembly.

Examples:

1. The reassembly of the engine took several hours.
2. The reassembly of the team was a difficult task after so much turnover.
3. The reassembly of the broken vase was a delicate process.
4. The reassembly of the archaeological finds took many years.
5. The reassembly of the scattered troops was a major victory for the commander.