The structure of the nonsolvable (P)-groups is completely described in this article. By definition, a finite group $G$ is called a (P)-group if any two cyclic $p$-subgroups of the same order are conjugate in $G$, whenever $p$ is a prime number dividing the order of $G$.
WAALL, ROBERT VAN DER and SEZER, SEZGİN
"On finite nonsolvable groups whose cyclic $p$-subgroups of equal order are conjugate,"
Turkish Journal of Mathematics: Vol. 46:
7, Article 15.
Available at: https://journals.tubitak.gov.tr/math/vol46/iss7/15