Aim: - To design a novel rectangular CPW dual-band Antenna by optimizing the gain in comparison with the W-shaped antenna in Military applications. Materials & Methods: - The no. of groups for the work are 2 and the no. of samples per group is 18. The total sample size is 36. Group 1 in this work is a novel rectangular CPW dual-band Antenna and Group 2 is the Wshaped Antenna. The sample size is calculated using the G-Power calculator in which the G-Power is 80 percent. The significant value of frequency is 0.007 and is 0.014 for gain (p<0.05) . Results: - The rectangular Co-Planar Waveguide dual-band antenna is having a gain of 23 dB and the gain of the W-shaped antenna is 4.9 dB. Conclusion: - In this work, the novel rectangular CPW dual-band antenna has a significantly better performance when compared to the W-shaped antenna.